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Finding the Fourth Proportional to 557,336.69, 769,172.07 and 315,662.26

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Solution

The fourth proportional to 557,336.69, 769,172.07 and 315,662.26 is: 435,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,336.69 : 769,172.07 = 315,662.26 : x
  2. Step 2: Convert to fraction form
    557,336.69/769,172.07 = 315,662.26/x
  3. Step 3: Cross multiply
    557,336.69x = 769,172.07 × 315,662.26
  4. Step 4: Simplify right side
    557,336.69x = 242,798,589,183.63
  5. Step 5: Solve for x
    x = 242,798,589,183.63/557,336.69
  6. Step 6: Final answer
    x = 435,640.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.